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The Goodman 20201901 Drain Hose Tube is a genuine OEM condensate hose designed for the WGFM295045V3BAB and compatible Goodman/Amana high-efficiency condensing furnaces. This pre-formed tube carries acidic condensate between the heat-exchanger drain ports, pressure switches, and trap along the factory-intended path, maintaining a sealed, air-tight route that keeps the draft-proving circuit accurate and the cabinet dry.
OEM vs. Generic: Condensate routing on a 96% AFUE furnace must stay leak-free and free of trapped air. The 20201901 is molded to Goodman's exact bends and port sizes, so it installs without adapters and holds its shape over years of thermal cycling. Generic tubing cut to length can kink, pull off warm fittings, or pool condensate — leading to leaks and pressure-switch lockouts. OEM ensures a proper, lasting fit.
Install difficulty: Easy (1/5). Plan on about 10–15 minutes: shut off power to the furnace, slide the old hose off its barbed ports, and press the replacement on in the identical routing. Take a moment to flush the drain system and verify there are no kinks or low spots. Restart and confirm condensate drains freely to the trap. Always de-energize the furnace before servicing.
Backed by genuine Goodman quality and shipped from National HVAC Parts.